The ornamental design for a tire tread and buttress, substantially as shown and described.
FIG. 1 is a perspective view of a tire tread and buttress embodying my new
design, it being understood that the pattern is repeated throughout the
circumference of the tire tread and buttress, as shown schematically by
solid lines, and that the buttress pattern is repeated on the opposite
side.
FIG. 2 is a front elevational view thereof.
FIG. 3 is a side elevational view thereof.
The broken lines in the drawing are understood to be for illustrative
purposes only.